Principle
Wavetable synthesis is fundamentally based on periodic reproduction of an arbitrary, single-cycle waveform. The distinction to other synthesis methods employing single-cycle waveforms is twofold: 1) multiple single-cycle waveforms are used while 2) one or several wave modulators control the change between those multiple waveforms or mixtures thereof. The wave modulation rate is usually significantly smaller (slower) than the sampling rate. Depending on the details of the actual implementation the sound produced by wavetable synthesis may also contain recognizable artifacts, especially aliasing, quantization, and phase truncation noise.
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